Watch the Checkerboard online guitar lesson by David Hamburger from 30 Blues Intros, Turnarounds, & Endings You MUST Know

This four-string dominant 7th voicing may be the boogaloo chord, and the single-note riffs on the low strings are straight out of the Buddy Guy/Junior Wells playbook. This turnaround is a bit of sleight-of-hand, as we're really combining the work of two guitar parts into one: the aggressive chord strums in the first half of measures 1 and 2, and the palm-muted single-note answers on beats 3 and 4.